Low Dropout Voltage Regulators

Low dropout voltage regulators are types of linear regulators that provide an inexpensive way of regulating output voltage with few external components. Linear regulators are used to maintain a steady voltage in electronic devices. Low dropout voltage regulators can regulate output voltage even when it's very close to the supply voltage. They have low noise and good ripple rejection making them crucial to maintaining a stable power supply in any power-management system.


What are low dropout voltage regulators used for?


Low dropout voltage regulators help to maintain system voltage independent of battery. This makes them useful for portable applications, as well as for equipment that needs a stable voltage while minimising the supply. You're likely to find low dropout voltage regulators in devices such as smoke detectors or alarm systems.


Choosing the right low dropout voltage regulator


There are various factors to consider when choosing the right regulator. These include required output voltage, maximum load current, minimum dropout voltage and the type and range of input voltage. Low dropout voltage regulators are the right choice if a more precise output voltage is necessary and there is a low power dissipation.


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Description Price Dropout Voltage at Maximum Current Output Voltage Output Type Package Type Maximum Output Current Mounting Type Minimum Input Voltage Maximum Input Voltage Pin Count Number of Outputs Polarity Quiescent Current Accuracy Minimum Operating Temperature
RS Stock No. 102-5701
Mfr. Part No.LM2940T-12.0/NOPB
SGD1.434
Each (In a Tube of 45)
units
- 12 V Fixed TO-220 1A Through Hole 13.6 V 26 V 3 1 Positive - - -40 °C
RS Stock No. 162-7853
Mfr. Part No.TLV70433DBVT
SGD0.557
Each (On a Reel of 250)
units
- 3.3 V Fixed SOT-23 150mA Surface Mount 2.5 V 24 V 5 1 Positive 3.2µA 2% -40 °C
RS Stock No. 812-4132
Mfr. Part No.TLV70433DBVT
SGD1.421
Each (In a Pack of 25)
units
- 3.3 V Fixed SOT-23 150mA Surface Mount 2.5 V 24 V 5 1 Positive 3.2µA 2% -40 °C
RS Stock No. 163-1056
Mfr. Part No.NCV5501DT50RKG
SGD0.755
Each (On a Reel of 2500)
units
- 5 V Fixed DPAK 500mA Surface Mount 5.7 V 16 V 3 1 Positive - 2.9% -40 °C
RS Stock No. 785-7272
Mfr. Part No.NCP551SN33T1G
SGD0.535
Each (In a Pack of 10)
units
- 3.3 V Fixed TSOP 150mA Surface Mount 0 V 12 V 5 1 Positive 8µA 2% -40 °C
RS Stock No. 537-8730
Mfr. Part No.LP38691DT-3.3/NOPB
SGD2.128
Each (In a Pack of 5)
units
- 3.3 V Fixed TO-252 500mA Surface Mount 2.7 V 10 V 3 1 Positive - ±2% -40 °C
RS Stock No. 145-6669
Mfr. Part No.TPS79501DCQ
SGD3.378
Each (In a Tube of 78)
units
- 1.2 → 5.5 V Adjustable SOT-223 500mA Surface Mount 2.7 V 5.5 V 5+Tab 1 Positive 0.265mA ±3% -40 °C
RS Stock No. 785-2653
Mfr. Part No.NCV5501DT50RKG
SGD0.85
Each (In a Pack of 5)
units
- 5 V Fixed DPAK 500mA Surface Mount 5.7 V 16 V 3 1 Positive - 2.9% -40 °C
RS Stock No. 661-3807
Mfr. Part No.TPS71550DCKR
SGD1.022
Each (In a Pack of 5)
units
- 5 V Fixed SC-70 50mA Surface Mount 2.5 V 24 V 5 1 Positive 0.0032mA ±4% -40 °C
RS Stock No. 535-8887
Mfr. Part No.LM2937ES-15/NOPB
SGD2.90
Each (In a Pack of 5)
units
- 15 V Fixed D2PAK (TO-263) 500mA Surface Mount - 26 V 3 1 Positive - ±5% -40 °C
RS Stock No. 103-5082
Mfr. Part No.NCP694D33HT1G
SGD1.078
Each (On a Reel of 1000)
units
- 3.3 V Fixed SOT-89 1A Surface Mount 1.4 V 6 V 5 1 Positive - - -40 °C
RS Stock No. 462-8084
Mfr. Part No.TLE4264GHTSA1
BrandInfineon
SGD1.878
Each (In a Pack of 5)
units
- 5 V Fixed SOT-223 120mA Surface Mount 5.5 V 45 V 3+Tab 1 Positive 9mA ±2% -40 °C
RS Stock No. 686-9388
Mfr. Part No.LD1117S33CTR
SGD0.407
Each (In a Pack of 25)
units
- 3.3 V Fixed SOT-223 1.3A Surface Mount - 15 V 3+Tab 1 Positive 5mA ±1% -40 °C
RS Stock No. 885-0718
Mfr. Part No.HT7521-1-SOT89
BrandHoltek
SGD0.437
Each (In a Pack of 20)
units
- 2.1 V Fixed SOT-89 100mA Surface Mount - 30 V 3 1 Positive 4µA ±3% -40 °C
RS Stock No. 533-9319
Mfr. Part No.LM1084IT-3.3/NOPB
SGD4.61
Each
units
- 3.3 V Fixed TO-220 5A Through Hole 2.6 V 27 V 3 1 Positive - - -40 °C
RS Stock No. 535-8663
Mfr. Part No.LM1117IMP-ADJ/NOPB
SGD1.724
Each (In a Pack of 5)
units
- 1.25 → 13.8 V Adjustable SOT-223 1.5A Surface Mount - 15 V 3+Tab 1 Positive - ±1% -40 °C
RS Stock No. 100-3958
Mfr. Part No.LM2936Z-5.0/NOPB
SGD1.675
Each (On a Reel of 1800)
units
- 5 V Fixed TO-92 50mA Through Hole 4 V 40 V 3 1 Positive - ±2% -40 °C
RS Stock No. 661-4456
Mfr. Part No.TPS79133DBVT
SGD1.812
Each (In a Pack of 5)
units
- 3.3 V Fixed SOT-23 100mA Surface Mount 2.7 V 5.5 V 5 1 Positive 0.17mA ±2% -40 °C
RS Stock No. 157-8361
Mfr. Part No.LT1963AET#PBF
SGD6.534
Each (In a Tube of 50)
units
- 1.21 → 20 V Adjustable TO-220 1.5A Through Hole 2.5 V 20 V 5 1 Positive 1µA - -40 °C
RS Stock No. 153-3330
Mfr. Part No.LT1763CS8-3.3#PBF
SGD4.913
Each (In a Tube of 100)
units
- 3.3 V Fixed SOIC 500mA Surface Mount 1.8 V 20 V 8 1 Positive 0.03mA - -40 °C
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